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Debt Obligations - Current Maturities of Long-Term Debt and Short-Term Borrowings (Detail) (USD $)
In Thousands, unless otherwise specified
Mar. 31, 2015
Dec. 31, 2014
Short-term Debt [Abstract]    
Short-term borrowings $ 4,134us-gaap_ShortTermBorrowings $ 5,056us-gaap_ShortTermBorrowings
Current maturities of long-term debt 5,306us-gaap_LongTermDebtCurrent 3,820us-gaap_LongTermDebtCurrent
Current maturities of long-term debt and short-term borrowings $ 9,440us-gaap_DebtCurrent $ 8,876us-gaap_DebtCurrent